| 摘要 |
PROBLEM TO BE SOLVED: To achieve a vehicle travel characteristic analysis system that is used only in a laboratory by a researcher and engineer of partial railroad vehicles until now as a familiar ubiquitous system that is simplified with essence maintained, is easily operated, is easy to understand, is interactive, and can be used broadly and daily in a site of a railroad business. SOLUTION: A secondary parameter is removed, a vehicle body is described in three rigid body models with small amount of essential parameters, the critical speed is determined by solving circulation simultaneous equations including a nonlinear spring characteristic by circulation calculation and repetition convergence calculation. Based on the critical speed, the process of travel in a curve is tracked with respect to a provided speed pattern, the behavior is described dynamically as both-wheel travel mode, one-wheel travel mode, and roll mode, and the process resulting in derail is determined and drawn. This system is achieved on the Excel as the ubiquitous system which anyone can easily use always anywhere. COPYRIGHT: (C)2009,JPO&INPIT
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